NEW YORK (AP) — A construction worker was slightly injured Sunday during demolition of a departures runway at the now-vacant Terminal 3 at Kennedy International Airport.

Steve Coleman, spokesman for the Port Authority of New York and New Jersey, which operates the airport, said the worker was struck in the leg by falling debris at about 10 a.m. Sunday. Coleman said the worker did not appear to be seriously injured but was walking with a slight limp afterward.

“Apparently, a piece of the concrete or roadway fell where they didn’t think it was going to fall,” Coleman said.

The terminal, also known as the Worldport, is memorable for its shape, which resembles a flying saucer. Constructed more than a half century ago, the terminal once housed Pan American World Airways. Delta Air Lines began using it in 1991, when Pan American ceased operations, but left the terminal last month. Plans call for it to someday be used for parking airplanes.